Question

我想在2个IQueryable变量中共享2列。

我有以下两个变量：

var leavingDays = resourcePlanningsInWeek.Where(rp => rp.Project.IsLeave);

var employeeRostersInWeek = employeeRostersExcludedHolidays
                .Where(rp => rp.RosterDate >= startDate &&
                             rp.RosterDate <= endDate);

我想做这样的事情：

leavingDays.RosterHours / employeeRostersInWeek.DeploymentPlanned 其中leavingDays.PlanDate等于employeeRostersInWeek.RosterDate

最后，我想总结所有价值观。

9/9 = 1

4,5 / 9 = 0,5

linq查询的结果（Sum all values）= 2,5

Answer 1

我认为应该这样做：

var result =
    (from l in leavingDays
        from r in employeeRostersInWeek
        where l.PlanDate == r.RosterDate
        select l.RosterHours / r.DeploymentPlanned
    ).Sum();

但是，如果将RosterHours和DeploymentPlanned定义为int并且您希望得到小数结果，则应首先将其中一个转换为小数数据类型，如下所示：< / p>

var result =
    (from l in leavingDays
        from r in employeeRostersInWeek
        where l.PlanDate == r.RosterDate
        select Convert.ToDouble(l.RosterHours) / r.DeploymentPlanned
    ).Sum();

linq查询从变量B中的列y共享变量A中的列x

1 个答案: